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https://www.readbyqxmd.com/read/28230788/the-adverse-effects-of-triptolide-on-the-reproductive-system-of-caenorhabditis-elegans-oogenesis-impairment-and-decreased-oocyte-quality
#1
Qinli Ruan, Yun Xu, Rui Xu, Jiaying Wang, Yongqing Hua, Meng Wang, Jinao Duan
Previous studies have revealed that Triptolide damages female reproductive capacity, but the mechanism is unclear. In this study, we used Caenorhabditis elegans to investigate the effects of Triptolide on the germline and explore its possible mechanisms. Our data show that exposure for 4 h to 50 and 100 mg/L Triptolide reduced C. elegans fertility, led to depletion and inactivation of spermatids with the changes in the expression levels of related genes, and increased the number of unfertilized oocytes through damaging chromosomes and DNA damage repair mechanisms...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28230786/sex-specificity-of-mineralocorticoid-target-gene-expression-during-renal-development-and-long-term-consequences
#2
Laurence Dumeige, Caroline Storey, Lyvianne Decourtye, Melanie Nehlich, Christophe Lhadj, Say Viengchareun, Laurent Kappeler, Marc Lombès, Laetitia Martinerie
Sex differences have been identified in various biological processes, including hypertension. The mineralocorticoid signaling pathway is an important contributor to early arterial hypertension, however its sex-specific expression has been scarcely studied, particularly with respect to the kidney. Basal systolic blood pressure (SBP) and heart rate (HR) were measured in adult male and female mice. Renal gene expression studies of major players of mineralocorticoid signaling were performed at different developmental stages in male and female mice using reverse transcription quantitative PCR (RT-qPCR), and were compared to those of the same genes in the lung, another mineralocorticoid epithelial target tissue that regulates ion exchange and electrolyte balance...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28230720/role-of-vitamin-a-retinoic-acid-in-regulation-of-embryonic-and-adult-hematopoiesis
#3
REVIEW
Ana Cañete, Elena Cano, Ramón Muñoz-Chápuli, Rita Carmona
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being necessary for adult tissue homeostasis. Vitamin A deficiency during pregnancy increases risk of maternal night blindness and anemia and may be a cause of congenital malformations. Childhood Vitamin A deficiency can cause xerophthalmia, lower resistance to infection and increased risk of mortality...
February 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28230711/asperger-syndrome-and-early-onset-schizophrenia-associated-with-a-novel-mecp2-deleterious-missense-variant
#4
Aurore Curie, Gaëtan Lesca, Gérald Bussy, Sabine Manificat, Valérie Arnaud, Sibylle Gonzalez, Olivier Revol, Alain Calender, Daniel Gérard, Vincent des Portes
Methyl-CpG-binding protein 2 (MECP2) deleterious variants, which are responsible for Rett syndrome in girls, are involved in a wide spectrum of developmental disabilities in males. A neuropsychiatric phenotype without intellectual disability is uncommon in patients with MECP2 deleterious variants. We report on two dizygotic twins with an MECP2-related psychiatric disorder without intellectual disability. Neuropsychological and psychiatric phenotype assessments were performed, and a genetic analysis was carried out...
February 22, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28230192/an-endoparasitoid-wasp-influences-host-dna-methylation
#5
Sunil Kumar, Yonggyun Kim
Parasitism by endoparasitoid wasps changes the expression of various host genes, and alters host immune and developmental processes. However, it is not clearly understood how parasitism changes host gene expression in a whole genome scale. This study focused on an epigenetic control of Cotesia plutellae, an endoparasitoid wasp, against its host, Plutella xylostella. Two DNA methyltransferases (DNMT-1 and DNMT-2) are encoded in the genome of P. xylostella. In addition, methyl-binding domain proteins (MBDs) and DNA demethylation factor, ten-eleven translation protein (TET) are encoded...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229527/melanotransferrin-new-homolog-genes-and-their-differential-expression-during-intestinal-regeneration-in-the-sea-cucumber-holothuria-glaberrima
#6
Josué Hernández-Pasos, Griselle Valentín-Tirado, José E García-Arrarás
Melanotransferrin (MTf) is a protein associated with oncogenetic, developmental, and immune processes which function remains unclear. The MTf gene has been reported in numerous vertebrate and invertebrate species, including echinoderms. We now report the finding of four different MTfs in the transcriptome of the sea cucumber Holothuria glaberrima. Sequence studies and phylogenetic analyses were done to ascertain the similarities among the putative proteins and their relationship with other transferrin family members...
February 23, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28229513/pathogenic-asxl1-somatic-variants-in-reference-databases-complicate-germline-variant-interpretation-for-bohring-opitz-syndrome
#7
Colleen M Carlston, Anne H O'Donnell-Luria, Hunter R Underhill, Beryl B Cummings, Ben Weisburd, Eric V Minikel, Daniel P Birnbaum, Tatiana Tvrdik, Daniel G MacArthur, Rong Mao
The clinical interpretation of genetic variants has come to rely heavily on reference population databases such as the Exome Aggregation Consortium (ExAC) database. Pathogenic variants in genes associated with severe, pediatric-onset, highly penetrant, autosomal dominant conditions are assumed to be absent or rare in these databases. Exome sequencing of a six-year-old female patient with seizures, developmental delay, dysmorphic features and failure to thrive identified an ASXL1 variant previously reported as causative of Bohring-Opitz syndrome (BOS)...
February 23, 2017: Human Mutation
https://www.readbyqxmd.com/read/28229362/transcriptional-and-post-translational-control-of-chlorophyll-biosynthesis-by-dark-operative-protochlorophyllide-oxidoreductase-in-norway-spruce
#8
Stolárik Tibor, Hedtke Boris, Šantrůček Jiří, Ilík Petr, Grimm Bernhard, Pavlovič Andrej
Unlike angiosperms, gymnosperms use two different enzymes for the reduction of protochlorophyllide to chlorophyllide: the light-dependent protochlorophyllide oxidoreductase (LPOR) and the dark-operative protochlorophyllide oxidoreductase (DPOR). In this study, we examined the specific role of both enzymes for chlorophyll synthesis in response to different light/dark and temperature conditions at different developmental stages (cotyledons and needles) of Norway spruce (Picea abies Karst.). The accumulation of chlorophyll and chlorophyll-binding proteins strongly decreased during dark growth in secondary needles at room temperature as well as in cotyledons at low temperature (7 °C) indicating suppression of DPOR activity...
February 22, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28228774/molecular-and-functional-characterization-of-wheat-argos-genes-influencing-plant-growth-and-stress-tolerance
#9
Yue Zhao, Xuejun Tian, Yuanyuan Li, Liyuan Zhang, Panfeng Guan, Xiaoxia Kou, Xiaobo Wang, Mingming Xin, Zhaorong Hu, Yingyin Yao, Zhongfu Ni, Qixin Sun, Huiru Peng
Auxin Regulated Gene involved in Organ Size (ARGOS) is significantly and positively associated with organ size and is involved in abiotic stress responses in plants. However, no studies on wheat ARGOS genes have been reported to date. In the present study, three TaARGOS homoeologous genes were isolated and located on chromosomes 4A, 4B, and 4D of bread wheat, all of which are highly conserved in wheat and its wild relatives. Comparisons of gene expression in different tissues demonstrated that the TaARGOSs were mainly expressed in the stem...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28228259/sirt1-regulates-dna-methylation-and-differentiation-potential-of-embryonic-stem-cells-by-antagonizing-dnmt3l
#10
Jinbeom Heo, Jisun Lim, Seungun Lee, Jaeho Jeong, Hyunsook Kang, YongHwan Kim, Jeong Wook Kang, Hwan Yeul Yu, Eui Man Jeong, Kyunggon Kim, Magda Kucia, Sabine J Waigel, Wolfgang Zacharias, Yinlu Chen, In-Gyu Kim, Mariusz Z Ratajczak, Dong-Myung Shin
Embryonic stem cell (ESC) abnormalities in genome methylation hamper the utility of their therapeutic derivatives; however, the underlying mechanisms are unknown. Here, we show that the nicotinamide adenine dinucleotide (NAD)-dependent deacetylase, Sirt1, selectively prevents abnormal DNA methylation of some developmental genes in murine ESCs by antagonizing Dnmt3l. Transcriptome and DNA methylome analyses demonstrated that Sirt1-null (Sirt1(-/-)) ESCs repress expression of a subset of imprinted and germline genes concomitant with increased DNA methylation of regulatory elements...
February 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28226265/alterations-of-ubiquitin-related-proteins-in-the-pathology-and-development-of-schizophrenia-evidence-from-human-and-animal-studies
#11
Jessica L Andrews, Frederic J Goodfellow, Natalie Matosin, Mollie K Snelling, Kelly A Newell, Xu-Feng Huang, Francesca Fernandez-Enright
Gene expression analyses in post-mortem schizophrenia brains suggest that a number of ubiquitin proteasome system (UPS) genes are associated with schizophrenia; however the status of UPS proteins in the schizophrenia brain is largely unknown. Ubiquitin related proteins are inherently involved in memory, neuronal survival and morphology, which are processes implicated in neurodevelopmental disorders such as schizophrenia. We examined levels of five UPS proteins (Protein Inhibitor of Activated STAT2 [PIAS2], F-Box and Leucine rich repeat protein 21 [FBXL21], Mouse Double Minute 2 homolog [MDM2], Ubiquitin Carboxyl-Terminal Hydrolase-L1 [UCHL1] and Ubiquitin Conjugating Enzyme E2D1 [UBE2D1]) involved in these neuronal processes, within the dorsolateral prefrontal cortex of post-mortem schizophrenia subjects and matched controls (n = 30/group), in addition to across neurodevelopmental time-points (juvenile, adolescent and adult stages of life), utilizing a well-established neurodevelopmental phencyclidine (PCP) animal model of schizophrenia...
January 18, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28226203/characteristic-changes-in-decidual-gene-expression-signature-in-spontaneous-term-parturition
#12
Haidy El-Azzamy, Andrea Balogh, Roberto Romero, Yi Xu, Christopher LaJeunesse, Olesya Plazyo, Zhonghui Xu, Theodore G Price, Zhong Dong, Adi L Tarca, Zoltan Papp, Sonia S Hassan, Tinnakorn Chaiworapongsa, Chong Jai Kim, Nardhy Gomez-Lopez, Nandor Gabor Than
Background: The decidua has been implicated in the "terminal pathway" of human term parturition, which is characterized by the activation of pro-inflammatory pathways in gestational tissues. However, the transcriptomic changes in the decidua leading to terminal pathway activation have not been systematically explored. This study aimed to compare the decidual expression of developmental signaling and inflammation-related genes before and after spontaneous term labor in order to reveal their involvement in this process...
February 22, 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28225770/a-distal-intergenic-region-controls-pancreatic-endocrine-differentiation-by-acting-as-a-transcriptional-enhancer-and-as-a-polycomb-response-element
#13
Joris van Arensbergen, Sebastien Dussaud, Corinne Pardanaud-Glavieux, Javier García-Hurtado, Claire Sauty, Aline Guerci, Jorge Ferrer, Philippe Ravassard
Lineage-selective expression of developmental genes is dependent on the interplay between activating and repressive mechanisms. Gene activation is dependent on cell-specific transcription factors that recognize transcriptional enhancer sequences. Gene repression often depends on the recruitment of Polycomb group (PcG) proteins, although the sequences that underlie the recruitment of PcG proteins, also known as Polycomb response elements (PREs), remain poorly understood in vertebrates. While distal PREs have been identified in mammals, a role for positive-acting enhancers in PcG-mediated repression has not been described...
2017: PloS One
https://www.readbyqxmd.com/read/28225068/relish2-mediates-bursicon-homodimer-induced-prophylactic-immunity-in-the-mosquito-aedes-aegypti
#14
Hongwei Zhang, Shengzhang Dong, Xi Chen, David Stanley, Brenda Beerntsen, Qili Feng, Qisheng Song
Bursicon is a neuropeptide hormone consisting of two cystine-knot proteins (burs α and burs β), responsible for cuticle tanning and other developmental processes in insects. Recent studies show that each bursicon subunit forms homodimers that induce prophylactic immunity in Drosophila melanogaster. Here, we investigated the hypothesis that bursicon homodimers act in prophylactic immunity in insects, and possibly arthropods, generally, using the mosquito, Aedes aegypti. We found that burs α and burs β are expressed in larvae, pupae and newly emerged adults...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28225056/comparative-rna-seq-analysis-of-transcriptome-dynamics-during-petal-development-in-rosa-chinensis
#15
Yu Han, Huihua Wan, Tangren Cheng, Jia Wang, Weiru Yang, Huitang Pan, Qixiang Zhang
The developmental process that produces the ornate petals of the China rose (Rosa chinensis) is complex and is thought to depend on the balanced expression of a functionally diverse array of genes; however, the molecular basis of rose petal development is largely unknown. Here, petal growth of the R. chinensis cultivar 'Old Blush' was divided into four developmental stages, and RNA-seq technology was used to analyse the dynamic changes in transcription that occur as development progresses. In total, 598 million clean reads and 61,456 successfully annotated unigenes were obtained...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28225036/three-tfl1-homologues-regulate-floral-initiation-in-the-biofuel-plant-jatropha-curcas
#16
Chaoqiong Li, Qiantang Fu, Longjian Niu, Li Luo, Jianghua Chen, Zeng-Fu Xu
Recent research revealed that TERMINAL FLOWER 1 (TFL1) homologues are involved in the critical developmental process of floral initiation in several plant species. In this study, the functions of three putative TFL1 homologues (JcTFL1a, JcTFL1b and JcTFL1c) in the biofuel plant Jatropha curcas were analysed using the transgenic approach. JcTFL1b and JcTFL1c, but not JcTFL1a, could complement the TFL1 function and rescue early flowering and determinate inflorescence phenotype in tfl1-14 Arabidopsis mutant, thus suggesting that JcTFL1b and JcTFL1c may be homologues of TFL1...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224992/diagnostic-exome-sequencing-in-266-dutch-patients-with-visual-impairment
#17
Lonneke Haer-Wigman, Wendy Ag van Zelst-Stams, Rolph Pfundt, L Ingeborgh van den Born, Caroline Cw Klaver, Joke Bgm Verheij, Carel B Hoyng, Martijn H Breuning, Camiel Jf Boon, Anneke J Kievit, Virginie Jm Verhoeven, Jan Wr Pott, Suzanne Ceh Sallevelt, Johanna M van Hagen, Astrid S Plomp, Hester Y Kroes, Stefan H Lelieveld, Jayne Y Hehir-Kwa, Steven Castelein, Marcel Nelen, Hans Scheffer, Dorien Lugtenberg, Frans Pm Cremers, Lies Hoefsloot, Helger G Yntema
Inherited eye disorders have a large clinical and genetic heterogeneity, which makes genetic diagnosis cumbersome. An exome-sequencing approach was developed in which data analysis was divided into two steps: the vision gene panel and exome analysis. In the vision gene panel analysis, variants in genes known to cause inherited eye disorders were assessed for pathogenicity. If no causative variants were detected and when the patient consented, the entire exome data was analyzed. A total of 266 Dutch patients with different types of inherited eye disorders, including inherited retinal dystrophies, cataract, developmental eye disorders and optic atrophy, were investigated...
February 22, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28224725/quisinostat-treatment-improves-histone-acetylation-and-developmental-competence-of-porcine-somatic-cell-nuclear-transfer-embryos
#18
Long Jin, Qing Guo, Hai-Ying Zhu, Xiao-Xu Xing, Guang-Lei Zhang, Mei-Fu Xuan, Qi-Rong Luo, Zhao-Bo Luo, Jun-Xia Wang, Xi-Jun Yin, Jin-Dan Kang
Abnormal epigenetic modifications are considered a main contributing factor to low cloning efficiency. In the present study, we explored the effects of quisinostat, a novel histone deacetylase inhibitor, on blastocyst formation rate in porcine somatic-cell nuclear transfer (SCNT) embryos, on acetylation of histone H3 lysine 9 (AcH3K9), and on expression of POU5F1 protein and apoptosis-related genes BAX and BCL2. Our results showed that treatment with 10 nM quisinostat for 24 h significantly improved the development of reconstructed embryos compared to the untreated group (19...
February 22, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28224202/germline-specific-dgcr8-knockout-in-zebrafish-using-a-back-approach
#19
Yun Liu, Zeyao Zhu, Idy H T Ho, Yujian Shi, Yuxin Xie, Jianzhen Li, Yong Zhang, Matthew T V Chan, Christopher H K Cheng
Zebrafish is an important model to study developmental biology and human diseases. However, an effective approach to achieve spatial and temporal gene knockout in zebrafish has not been well established. In this study, we have developed a new approach, namely bacterial artificial chromosome-rescue-based knockout (BACK), to achieve conditional gene knockout in zebrafish using the Cre/loxP system. We have successfully deleted the DiGeorge syndrome critical region gene 8 (dgcr8) in zebrafish germ line and demonstrated that the maternal-zygotic dgcr8 (MZdgcr8) embryos exhibit MZdicer-like phenotypes with morphological defects which could be rescued by miR-430, indicating that canonical microRNAs play critical role in early development...
February 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28223921/epigenetic-modulation-of-stem-cells-in-neurodevelopment-the-role-of-methylation-and-acetylation
#20
REVIEW
Martyna Podobinska, Ilona Szablowska-Gadomska, Justyna Augustyniak, Ioanna Sandvig, Axel Sandvig, Leonora Buzanska
The coordinated development of the nervous system requires fidelity in the expression of specific genes determining the different neural cell phenotypes. Stem cell fate decisions during neurodevelopment are strictly correlated with their epigenetic status. The epigenetic regulatory processes, such as DNA methylation and histone modifications discussed in this review article, may impact both neural stem cell (NSC) self-renewal and differentiation and thus play an important role in neurodevelopment. At the same time, stem cell decisions regarding fate commitment and differentiation are highly dependent on the temporospatial expression of specific genes contingent on the developmental stage of the nervous system...
2017: Frontiers in Cellular Neuroscience
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